CAS 863190-20-9 appears in our catalog under these names: 5-(5-Ethyl-2-thienyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carbonyl chloride, 95%, 5-(5-Ethylthiophen-2-yl)-7-(trifluoromethyl)pyrazolo(1,5-a)pyrimidine-2-carbonyl chloride, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g, 1g.